MALICIOUS
160
Risk Score
Malware Insights
MITRE ATT&CK
T1204 User Execution: Malicious Link
T1059 Command and Scripting Interpreter
The RTF file contains an embedded OLE object and specifically triggers the RTF_EQUATION_EDITOR heuristic, indicating an attempt to exploit a vulnerability in the Equation Editor. The document body contains a lure instructing the user to 'Enable editing', which is a common technique to bypass macro security settings and activate embedded exploits. The presence of objupdate further suggests that the embedded OLE object is intended to be activated automatically.
Heuristics 5
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Split hex Equation Editor ProgID + OLE object critical RTF_EQUATION_EDITORRTF embeds the Equation.3 ProgID as hex bytes near OLE object activation and splits the byte stream with whitespace or an ignorable RTF group. This is an Equation Editor OLE activation surface commonly used by CVE-2017-11882 / CVE-2018-0802 exploit documents.
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\objupdate forces OLE activation high RTF_OBJUPDATERTF contains \objupdate — forces automatic OLE object instantiation when the document is opened, bypassing user interaction. Almost exclusively seen in Equation Editor exploit documents.
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OLE object data medium RTF_OBJDATARTF contains 1 \objdata section(s) — embedded OLE objects
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Embedded OLE object medium RTF_OBJEMBRTF contains \objemb — embedded OLE object
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Macro/content-enable lure medium SE_ENABLE_LUREDocument instructs the user to enable macros or editing — a common technique used by malware droppers to bypass Office macro security settings
Extracted artifacts 1
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
objdata_00_off00041c36.bin995778863a978d6577cf0fb8d65052d5dc3b83b5c2cc6873298a6371309d1c5e |
rtf-objdata-decoded | RTF \objdata at offset 0x41C36 | 2039 bytes |
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